Find the Domain x-y=-1

Problem

x−y=−1

Solution

1. Solve for y to express the equation as a function of x

x−y=−1

−y=−x−1

y=x+1

2. Identify the type of function.
   The equation y=x+1 is a linear function.

3. Determine any restrictions on the input variable x
   A linear function is defined for all real numbers because there are no denominators that could be zero and no square roots of negative numbers.

4. State the domain in interval notation.
   Since there are no restrictions, the domain is all real numbers.

(−∞,∞)

Final Answer

Domain of *x−y=−1* is *(−∞,∞)

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